Reference coordinate system determination
First Claim
Patent Images
1. A method of determining a reference coordinate system for use by a device, the method comprising:
- obtaining an image frame;
determining a point cloud based on the image frame; and
producing the reference coordinate system based on the point cloud by setting an origin of the reference coordinate system to a geometric center of a substantially planar portion of the point cloud.
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Abstract
A method of determining a reference coordinate system includes: obtaining information indicative of a direction of gravity relative to a device; and converting an orientation of a device coordinate system using the direction of gravity relative to the device to produce the reference coordinate system. The method may also include setting an origin of the reference coordinate system and/or determining a scale value of the reference coordinate system. The method may also include refining the reference coordinate system.
24 Citations
16 Claims
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1. A method of determining a reference coordinate system for use by a device, the method comprising:
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obtaining an image frame; determining a point cloud based on the image frame; and producing the reference coordinate system based on the point cloud by setting an origin of the reference coordinate system to a geometric center of a substantially planar portion of the point cloud. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for determining a reference coordinate system, the device comprising:
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means for obtaining an image frame; means for determining a point cloud based on the image frame; and means for producing the reference coordinate system based on the point cloud, including means for setting an origin of the reference coordinate system to a geometric center of a substantially planar portion of the point cloud. - View Dependent Claims (9, 10, 11, 12)
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13. A mobile device comprising:
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a camera configured to obtain an image frame; and a processor, communicatively coupled to the camera, configured to; determine a point cloud based on the image frame; and produce the reference coordinate system based on the point cloud by setting an origin of the reference coordinate system to a geometric center of a substantially planar portion of the point cloud. - View Dependent Claims (14)
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15. A non-transitory processor-readable storage medium comprising processor-readable instructions configured to cause a processor of a device to:
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obtain an image frame; determine a point cloud based on the image frame; produce the reference coordinate system based on the point cloud; and set an origin of the reference coordinate system to a geometric center of a substantially planar portion of the point cloud. - View Dependent Claims (16)
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Specification